diff --git a/arch/mips/ath79/dev-common.c b/arch/mips/ath79/dev-common.c
index 2093b1b2a1d1..ea3a8140e728 100644
--- a/arch/mips/ath79/dev-common.c
+++ b/arch/mips/ath79/dev-common.c
@@ -103,5 +103,13 @@ void __init ath79_register_uart(void)
 
 void __init ath79_register_wdt(void)
 {
-	platform_device_register_simple("ath79-wdt", -1, NULL, 0);
+	struct resource res;
+
+	memset(&res, 0, sizeof(res));
+
+	res.flags = IORESOURCE_MEM;
+	res.start = AR71XX_RESET_BASE + AR71XX_RESET_REG_WDOG_CTRL;
+	res.end = res.start + 0x8 - 1;
+
+	platform_device_register_simple("ath79-wdt", -1, &res, 1);
 }
diff --git a/drivers/watchdog/ath79_wdt.c b/drivers/watchdog/ath79_wdt.c
index dcd18ec1821b..e786f644e14b 100644
--- a/drivers/watchdog/ath79_wdt.c
+++ b/drivers/watchdog/ath79_wdt.c
@@ -23,6 +23,7 @@
 #include <linux/errno.h>
 #include <linux/fs.h>
 #include <linux/init.h>
+#include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/miscdevice.h>
 #include <linux/module.h>
@@ -33,13 +34,13 @@
 #include <linux/clk.h>
 #include <linux/err.h>
 
-#include <asm/mach-ath79/ath79.h>
-#include <asm/mach-ath79/ar71xx_regs.h>
-
 #define DRIVER_NAME	"ath79-wdt"
 
 #define WDT_TIMEOUT	15	/* seconds */
 
+#define WDOG_REG_CTRL		0x00
+#define WDOG_REG_TIMER		0x04
+
 #define WDOG_CTRL_LAST_RESET	BIT(31)
 #define WDOG_CTRL_ACTION_MASK	3
 #define WDOG_CTRL_ACTION_NONE	0	/* no action */
@@ -66,27 +67,38 @@ static struct clk *wdt_clk;
 static unsigned long wdt_freq;
 static int boot_status;
 static int max_timeout;
+static void __iomem *wdt_base;
+
+static inline void ath79_wdt_wr(unsigned reg, u32 val)
+{
+	iowrite32(val, wdt_base + reg);
+}
+
+static inline u32 ath79_wdt_rr(unsigned reg)
+{
+	return ioread32(wdt_base + reg);
+}
 
 static inline void ath79_wdt_keepalive(void)
 {
-	ath79_reset_wr(AR71XX_RESET_REG_WDOG, wdt_freq * timeout);
+	ath79_wdt_wr(WDOG_REG_TIMER, wdt_freq * timeout);
 	/* flush write */
-	ath79_reset_rr(AR71XX_RESET_REG_WDOG);
+	ath79_wdt_rr(WDOG_REG_TIMER);
 }
 
 static inline void ath79_wdt_enable(void)
 {
 	ath79_wdt_keepalive();
-	ath79_reset_wr(AR71XX_RESET_REG_WDOG_CTRL, WDOG_CTRL_ACTION_FCR);
+	ath79_wdt_wr(WDOG_REG_CTRL, WDOG_CTRL_ACTION_FCR);
 	/* flush write */
-	ath79_reset_rr(AR71XX_RESET_REG_WDOG_CTRL);
+	ath79_wdt_rr(WDOG_REG_CTRL);
 }
 
 static inline void ath79_wdt_disable(void)
 {
-	ath79_reset_wr(AR71XX_RESET_REG_WDOG_CTRL, WDOG_CTRL_ACTION_NONE);
+	ath79_wdt_wr(WDOG_REG_CTRL, WDOG_CTRL_ACTION_NONE);
 	/* flush write */
-	ath79_reset_rr(AR71XX_RESET_REG_WDOG_CTRL);
+	ath79_wdt_rr(WDOG_REG_CTRL);
 }
 
 static int ath79_wdt_set_timeout(int val)
@@ -226,9 +238,25 @@ static struct miscdevice ath79_wdt_miscdev = {
 
 static int ath79_wdt_probe(struct platform_device *pdev)
 {
+	struct resource *res;
 	u32 ctrl;
 	int err;
 
+	if (wdt_base)
+		return -EBUSY;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(&pdev->dev, "no memory resource found\n");
+		return -EINVAL;
+	}
+
+	wdt_base = devm_request_and_ioremap(&pdev->dev, res);
+	if (!wdt_base) {
+		dev_err(&pdev->dev, "unable to remap memory region\n");
+		return -ENOMEM;
+	}
+
 	wdt_clk = devm_clk_get(&pdev->dev, "wdt");
 	if (IS_ERR(wdt_clk))
 		return PTR_ERR(wdt_clk);
@@ -251,7 +279,7 @@ static int ath79_wdt_probe(struct platform_device *pdev)
 			max_timeout, timeout);
 	}
 
-	ctrl = ath79_reset_rr(AR71XX_RESET_REG_WDOG_CTRL);
+	ctrl = ath79_wdt_rr(WDOG_REG_CTRL);
 	boot_status = (ctrl & WDOG_CTRL_LAST_RESET) ? WDIOF_CARDRESET : 0;
 
 	err = misc_register(&ath79_wdt_miscdev);